| Rhondda to Frederick (Maryland) | 3,519.70 mi (5,664.40 km) |
| Rhondda to Fredericksburg (Texas) | 4,827.88 mi (7,769.72 km) |
| Rhondda to Fredericksburg (Virginia) | 3,573.22 mi (5,750.54 km) |
| Rhondda to Frederickson (Washington) | 4,719.89 mi (7,595.93 km) |
| Rhondda to Freeport (Illinois) | 3,876.13 mi (6,238.02 km) |
| Rhondda to Freeport (New York) | 3,309.27 mi (5,325.76 km) |
| Rhondda to Freeport (Texas) | 4,756.48 mi (7,654.81 km) |
| Rhondda to Fremont (California) | 5,250.78 mi (8,450.32 km) |
| Rhondda to Fremont (Nebraska) | 4,173.62 mi (6,716.79 km) |
| Rhondda to Fremont (Ohio) | 3,664.67 mi (5,897.72 km) |
| Rhondda to French Valley (California) | 5,315.97 mi (8,555.22 km) |
| Rhondda to Fresno (California) | 5,224.51 mi (8,408.04 km) |
| Rhondda to Fresno (Texas) | 4,730.45 mi (7,612.93 km) |
| Rhondda to Fridley (Minnesota) | 3,883.03 mi (6,249.13 km) |
| Rhondda to Friendly (Maryland) | 3,531.06 mi (5,682.70 km) |
